JPS5940242A - Device for checking scuff of bottles - Google Patents

Abstract

PURPOSE:To make it possible to detect scuffs of bottles even whose surface is wet accurately, by projecting light on the bottle, transmitting the light through the bottle, receiving the transmitted light, which is refracted at a specified angle, by a CCD camera, and selecting the bottles, on which a specified amount of scuffs (abrasions) is yielded, based on the output signal. CONSTITUTION:Light from a light source 7 is projected on a bottle 2 through a gap between light screening plates 10 and 10. The light 9 is transmitted through the bottle 2. The light 9, which is refracted by scuffs at a specified angle, among the transmitted light 9 is received by a CCD camera 8 (which is provided with a one dimensional image pickup element and sequentially scans a specified width in association with the movement of the bottle 2). The data is sent to a control circuit 13 and a monitor 12 from a controller 11. The monitor 12 displays the data for every scanning bit. The circuit 13 reads said data, performs integrating operation, and compares the result with a preset reference level. When the result exceeds the reference, a signal is outputted to a rejector 14, and the defective bottle is rejected. Thus, the scuffs can be detected accurately even though the surface of the bottle 2 is wet.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an acid scuff inspection device for inspecting scuff generated on the surface of acids.

Generally, acids such as beer bottles are used once and then collected and used again. These acids form scuffs (
If the scuff is used for a long period of time, countless scratches will occur, leaving the scuff area looking white. Although this does not affect the strength of the acids or the contents, there is a problem in that the appearance is poor and the commercial value is significantly reduced.

Therefore, acids that have produced a predetermined amount of scuff are discarded, and the scuff is visually inspected. Furthermore, the following optical inspection device has been proposed as an alternative to visual inspection.

That is, as shown in FIG. 1, conventionally, a light beam from a light source n is irradiated onto the surface of an acid d through a gap in a light shielding plate C, and the light beam reflected from the surface of the acid d is captured by a one-dimensional imaging means. e(C.C.
Acid d is rotated to receive the reflected light from the entire surface, and the control circuit calculates the light.When this calculated value is equal to or higher than the standard level, a signal is output and a predetermined amount of scuff is removed. The resulting acids are removed.

This scuff inspection device uses the reflected light beam reflected from the surface of the acid d, so if the surface of the acid d is wet, the light beam will not be reflected by the acid d. In this case, there was a problem in that the acid d was determined to be of good quality even though a large number of scuffs were generated, and the reliability was low.

In view of this point, the present invention uses a one-dimensional imaging means to receive the transmitted light that is refracted at a predetermined angle among the light that is irradiated from a light source to a silicic acid and transmitted through the acid, and the amount of synucatogia is examined using the received transmitted light. This provides an acid scuff inspection device that can accurately inspect the amount of scuff even in wet acids.

The present invention will be described in detail below based on an embodiment shown in one drawing.

As shown in FIGS. 2 and 6, 1 is a scuff inspection device for inspecting the scuff of various acids 2 such as beer bottles, and is composed of an optical system 6 and a control system 4 (1G).

The acids 2 are configured to be transported through the conveyance path 6.

The optical system 3 includes a light source 7 on one side of the conveyance path 6 and a CC on one side.
A D camera 8 (-dimensional imaging means) is installed, and light 9 is irradiated from the light source 7 onto the acid 2. A light shielding plate 1o is provided upright on the light source Z side of the transport path B, and light 9 is irradiated onto the acid 2 through the gap between the light shielding plates 10, and excess light 9 is blocked.

The CCD camera 8 is installed so as to receive the transmitted light 9 which is refracted to a predetermined angle by the scuff out of the light 9 that is irradiated onto the acid 2 from the light source 7 and transmitted through the acid 2. This CCD camera 8 is equipped with a one-dimensional image sensor, is configured to sequentially scan a fixed width as the Wis 2 moves, and is linked to the camera controller 1 and the roller 11.

This controller 11 is connected to a control system 4 and a monitor 12, and supplies camera data to each of them. The monitor 12 displays the output from the camera, that is, the transmitted light 9 received by the CCD camera 8, and is designed to sequentially display the output level of each scan as the acid 2 moves.

The control system 4 is composed of a control circuit 13 (microprocessor) having an arithmetic function and a jetter 14 (select means).

The control circuit 13 calculates the camera data scanned by the CCD camera 8, that is, performs an integral calculation on each bit output level for all scans, compares the integral calculation value with a preset reference level, and performs re-execution when the value exceeds the reference level. 1 to output a signal.

9. The rejector 14 is composed of a bushing cylinder or the like. operates based on the control circuit 13 glue direct signal,
The acid 2 having a predetermined amount of scuff is removed.

Reference numeral 15 denotes a position detection means for the acid 2, which is composed of two position sensors 15a and 15b consisting of a pair of light emitters and receivers, and is connected to the control circuit 13. When this first position sensor bottle 5aK' bottle 2 arrives, a detection signal is output to the control circuit 13, and when it passes the second position sensor 15b, the detection signal is cleared. These two sets of sensors 15a.

151) Determine the inspection range on the skin surface of acid 2 that passes through the interval.

Next, the scuff inspection operation will be explained based on the control flow shown in FIG.

The acids 2 are transported along the conveyance path 6 and move in front of the light source 7.

Therefore, first, in step 17, it is determined whether or not the acid 2 has arrived, that is, the first position sensor 15a detects the acid 2.
If the detection signal is not output to the control circuit 13, the determination becomes No and the process goes into a waiting state in step 17.9. If the acid 2 moves and the position sensor 15a detects it, the 9 judgment is YES.
Then, the process moves to step 18.

When the acid 2 comes in front of the light source 7, the light 9 from the light source 7 is irradiated onto the acid 2 through the gap between the light shielding plates 10. This light 9 will pass through the acid 2, but scuffs have formed on the surface of the acid 2.

The transmitted light 9 will be refracted by the scuff.

The CCD camera 8 receives this refracted transmitted light 9. The CCD camera 8 sequentially scans a certain width of the skin surface as the acid 2 moves, and converts the received transmitted light 9 into an electrical signal for each scanning bit.

The amount of pickling and scuffing is detected by transmitted light 9.

It is converted into an electrical signal and supplied as camera data from the controller 11 to the control circuit 13 and monitor 12.

The monitor 12 displays this bit-by-bit data, while the control circuit 13 reads this data.

Next, the process moves from step 18 to step 19. In this step 19, it is determined whether or not the acid 2 has left, and until the acid 2 has left, the determination in step 19 becomes No, the process returns to step 18, and the data is sequentially read. In other words, until the second position sensor 15I) detects the passage of the acid 2, the transmitted light 9i CCD camera 8 scans the skin surface of the moving acid 2 over a certain width, and reads the data bit by bit. Become.

When this second position sensor 15)) detects passage of the acid 2, the determination in step 19 becomes YES.

The process will move on to step 20. In step 20, the control circuit 13 performs an integral operation on the bit data taken in, and then in step 21, it compares the calculated value with a preset reference level to determine whether the bottle is of good quality. That is, when the calculated value is below the reference level, the determination in step 21 is YES.

Return to step 17 and wait for the next acid 2, the other.

If the level is below the M1 level, the determination in step 21 is NO, and the process moves to step 22, where the control circuit 15 outputs a direct signal.

This reject signal activates the rejector 14,
The acids 2 which the scuff has more than a predetermined number i are removed.

Incidentally, when the reject signal is output, the process returns to step 17 and waits for the ninth acid.

FIG. 5 shows the scuff degree S obtained by the scuff inspection device 1.
This shows the relationship between the order of quality of acids 2 and the order of visual quality of acids 2. As shown in this Figure 5.

There is a nearly proportional relationship between the degree of roughness S and the order by visual inspection, and as the impression of appearance to the viewer worsens, the degree of roughness S also increases. Therefore.

Nucara roughness S'f corresponding to the order of visual observation: control circuit 16
set to the standard level. For example, if the order of visual tolerance limits is set to 7, acids 2 with scuff anti-S of 6.0 or higher will be removed.

Incidentally, the scuff degree S is obtained by the following formula.

S= 10/3X (, (Joglo(rX103))
r: Area ratio of the hollow rough portion FIG. 6 shows another example of installing the light shielding plate 26.

Light shielding plates 23 are provided on both sides of the conveyance path 6 approximately diagonally, and C
A CD camera 8 is positioned on the back surface of the light shielding plate 23. In short, out of the light 9 from the light source 7, the light 9 that has passed through the acid 2 is received by the CCD camera 8.

In the embodiment, the control circuit 13 performs an integral operation on all the data scanned by the CCD camera 8 and compares it with the reference level. .

The difference may be calculated to determine whether or not the bottle is of good quality.

In addition, the control circuit 13 was configured to output a reject signal, but it was configured to output all signals indicating a good bottle.
The rejector 14 may be replaced with a selection means that moves good bottles to another system. Furthermore, by providing an output terminal that can externally monitor the result of the integral calculation, it becomes possible to collect data regarding the degree of scuffing in the geoline.

As described above, the present invention includes a one-dimensional imaging means that irradiates light emitted from a light source onto acids and receives transmitted light that is transmitted through the bottles and refracted at a predetermined angle.

A control circuit calculates the output signal of the -dimensional imaging means to generate a signal when it is above the reference level /L/LJ, and the selection means selects acids with a predetermined amount of scuff based on this signal. ing.

Therefore, since the scuff is detected based on the transmitted light of the acid, the scuff can be reliably detected even if the acid is wet, so that highly reliable inspection can be performed.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view showing the main parts of a conventional scuff inspection device, FIGS. 2 to 6 show embodiments of the present invention, and FIG. FIG. 3 is a schematic configuration diagram of a scuff inspection device, FIG. 4 is a quantity control flow diagram, and FIG. 5 is a diagram showing the relationship between the degree of scuffing of bottles and the order by visual inspection. FIG. 6 is a schematic plan view of the main parts of another scuff inspection device. 1: Scuff inspection device, 2: Bottles. 3 = optical system, 4: control system, 6: transport path. 7: Light source, B: CCD camera, 9: Light. 10/23: Light shielding plate, 11: Camera controller,
12: Monitor, 13: Control circuit. 14: Rejector, 15: Position detection means. 15a, 15b = position sensor. Patent applicant Sun) IJ-Co., Ltd. Agent
Patent Attorney Shigeru Nakamura (11) Figure 1

Claims (1)

[Claims] (1) A light source that irradiates light onto the acid being inspected. a one-dimensional imaging means for receiving transmitted light irradiated by the light source, transmitted through the acid, and refracted at a predetermined angle; A control circuit that calculates the output signal of this -dimensional imaging means and outputs a signal when the calculated value exceeds a preset reference level, and a control circuit that outputs a signal when the calculated value exceeds a preset reference level; An acid scuff inspection device characterized by a selection means.